2009-03-10 23:49:23 +00:00
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.TH CSYN 8
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.SH NAME
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csyn \- ceph synthetic workload generator
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.SH SYNOPSIS
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.B csyn
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[ \fB\-m monaddr:port\fP ]
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\fB--syn\fI command ...\fP
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.SH DESCRIPTION
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.B csyn
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is a simple synthetic workload generator for the Ceph distributed file system.
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It uses the userspace client library to generate simple workloads against
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a currently running file system. The file system need not be mounted via
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.BR cfuse (8)
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or the kernel client.
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.PP
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One or more \fB--syn\fI command\fR arguments specify the particular workload,
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as documented below.
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.SH OPTIONS
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.TP
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\fB\-d\fP
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Detach from console and daemonize after startup.
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.TP
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\fB\-c\fI ceph.conf\fR, \fB\-\-conf=\fIceph.conf\fR
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Use \fIceph.conf\fP configuration file instead of the default \fI/etc/ceph/ceph.conf\fP
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to determine monitor addresses during startup.
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.TP
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\fB\-m\fI monaddress[:port]\fR
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2009-03-11 23:03:05 +00:00
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Connect to specified monitor (instead of looking through \fIceph.conf\fR).
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2009-03-10 23:49:23 +00:00
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.TP
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\fB\-\-num_client\fI num\fR
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Run \fInum\fR different clients, each in a separate thread.
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.TP
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\fB\-\-syn\fI workloadspec\fR
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Run the given workload. May be specified as many times as needed. Workloads will
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normally run sequentially.
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.SH WORKLOADS
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2011-03-07 19:06:30 +00:00
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Each workload should be preceded by \fB--syn\fP on the command line. This is not a
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2009-03-10 23:49:23 +00:00
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complete list.
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.TP
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\fBmknap\fI path snapname\fP
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Create a snapshot called \fIsnapname\fP on \fIpath\fP.
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.TP
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\fBrmsnap\fI path snapname\fP
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Delete snapshot called \fIsnapname\fP on \fIpath\fP.
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.TP
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\fBrmfile\fI path\fP
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Delete/unlink \fIpath\fP.
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.TP
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\fBwritefile\fI sizeinmb blocksize\fP
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Create a file, named after our client id, that is \fIsizeinmb\fP MB by writing \fIblocksize\fP chunks.
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.TP
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\fBreadfile\fI sizeinmb blocksize\fP
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Read file, named after our client id, that is \fIsizeinmb\fP MB by writing \fIblocksize\fP chunks.
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.TP
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\fBrw\fI sizeinmb blocksize\fP
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Write file, then read it back, as above.
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.TP
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\fBmakedirs\fI numsubdirs numfiles depth\fP
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Create a hierarchy of directories that is \fIdepth\fP levels deep. Give each
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directory \fInumsubdirs\fP subdirectories and \fInumfiles\fP files.
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.TP
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\fBwalk\fP
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Recursively walk the file system (like \fBfind\fP).
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.SH AVAILABILITY
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.B csyn
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is part of the Ceph distributed file system. Please refer to the Ceph wiki at
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http://ceph.newdream.net/wiki for more information.
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.SH SEE ALSO
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.BR ceph (8),
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.BR cfuse (8)
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